Planet Arduino

by codebender_cc @ instructables.com:

The MQ series of gas sensors use a small heater inside with an electro-chemical sensor. They are sensitive for a range of gasses and are used indoors at room temperature. The output is an analog signal and can be read with an analog input of the Arduino.

The MQ-2 Gas Sensor module is useful for gas leakage detecting in home and industry. It can detect LPG, i-butane, propane, methane ,alcohol, hydrogen and smoke.

Some modules have a built-in variable resistor to adjust the sensitivity of the sensor.

How to use MQ2 Gas Sensor – Arduino Tutorial – [Link]

ICStation @ instructables.com writes:

ICStation team introduce you how to DIY this temperature & humidity & smoke alarm system based on ICStation Mega 2560 compatible with Arduino.The working voltage of this system is DC5V.It can measure the current temperature, humidity and smoke. It can display real-time data by the 1602 LCD and can realize the sound and light alarm when in the dangerous temperature and humidity. It is a simply and easily to operate monitoring alarm system about temperature humidity and smoke.

DIY Temperature & Humidity & Smoke Detector - [Link]

The Atmospheric Gas Detector Kit, found in the Makershed, gives you the components needed to detect different kinds of gases. In this episode of "Projects with Ryan Slaugh", we will go through the steps of setting up the base experiment from the book included with the kit.

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